package com.dao;

import java.util.List;
import java.util.Map;

/**
 * @author fanxiao  2022/2/17
 * @since 1.0.0
 */
public interface DbOperations {

	Map<String, Object> querySingleObjectById();

	List<Map<String, Object>> queryObjectsById();

	int removeById();

	int insert(Map<String, Object> columnMap);
}
